Caldecott Traffic Advisory | 511 Contra Costa

Caldecott Traffic Advisory

Oakland, Calif., – Below is the scheduled upcoming closures associated with work on the Caldecott Fourth Bore Project.
Please note that fog and inclement weather would impact the schedule.
Contra Costa County:.
Westbound Fish Ranch Road On-Ramp: Planned closures between the hours of 9 p.m. Monday, November 21 and 5 a.m. Tuesday, November 22; and between the hours of 9 p.m. Tuesday, November 22 and 5 a.m. Wednesday, November 23.
The work is being performed as part of the Caldecott Tunnel Fourth Bore Project.  In addition to the excavation of a 3,400-foot-long tunnel north of the existing three bores, the project involves traffic improvements on the eastern and western sides of the tunnel.
For more information on the upcoming ramp closure, log on to

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